If you prefer using the command line, you can easily find a file’s permission settings with the ls command, used to list information about files/directories. You can also add the –l option to the command to see the information in the long list format.
$ ls -l passwd
-rw-r--r--. 1 root root 2653 Aug 13 16:36 passwd
Here you can see that the user only has read power to passwd file.